Answer:
Explanation:
Let be % of at time (time in minutes).
Amount of in room=Volume of room
Rate of change of in room=Volume of room x
Rate of inflow of =
Rate of outflow
Therefore rate of change of is
% rate of change is
Therefore we have:
Integrate both:
InIn
Raise both sides to base ,
Initially, there's only 0.25% of ,
Now substitute and
Answer: Transverse waves have motion perpendicular to velocity, while longitudinal waves have motion parallel to velocity.
Explanation:
Transverse waves are characterized by the fact that the particles of the medium in which they propagate move transversely to the direction of propagation of the wave.
In other words,<u> its displacement is perpendicular to the direction of propagation of the wave</u>, being a good example the circular waves in the water.
On the other hand, Longitudinal waves are characterized by the fact that <u>the oscillation of the particles in the medium is parallel to the direction of propagation of the wave.</u> A good example of this is the sound wave.
Matter expands when it gets hotter
Answer:
The apple fell at a distance of 4.17 m.
Explanation:
Work is defined as the force that is applied on a body to move it from one point to another. When a force is applied, an energy transfer occurs. Then it can be said that work is energy in motion.
When a net force is applied to the body or a system and this produces displacement, then that force is said to perform mechanical work.
In the International System of Units, work is measured in Joule. Joule is equivalent to Newton per meter.
The work is equal to the product of the force by the distance and by the cosine of the angle that exists between the direction of the force and the direction that travels the point or the object that moves.
Work=Force*distance* cosine(angle)
On the other hand, Newton's second law says that the acceleration of a body is proportional to the resultant of forces on it acting and inversely proportional to its mass. This is represented by:
F=m*a
where F is Force [N], m is Mass [kg] and a Acceleration [m / s²]
In this case, the acceleration corresponds to the acceleration of gravity, whose value is 9.81 m / s². So you have:
- Work= 9 J
- F=m*a=0.22 kg*9.81 m/s²= 2.1582 N
- distance= ?
- angle=0 → cosine(angle)= 1
Replacing:
9 J= 2.1582 N* distante* 1
Solving:
distance= 4.17 m
<u><em>The apple fell at a distance of 4.17 m.</em></u>
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